1303121220017 has 2 divisors, whose sum is σ = 1303121220018. Its totient is φ = 1303121220016.

The previous prime is 1303121219971. The next prime is 1303121220047. The reversal of 1303121220017 is 7100221213031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 987590738176 + 315530481841 = 993776^2 + 561721^2 .

It is a cyclic number.

It is not a de Polignac number, because 1303121220017 - 2⁸ = 1303121219761 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1303121219974 and 1303121220001.

It is not a weakly prime, because it can be changed into another prime (1303121220047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651560610008 + 651560610009.

It is an arithmetic number, because the mean of its divisors is an integer number (651560610009).

Almost surely, 2^{1303121220017} is an apocalyptic number.

It is an amenable number.

1303121220017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1303121220017 is an equidigital number, since it uses as much as digits as its factorization.

1303121220017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 23.

Adding to 1303121220017 its reverse (7100221213031), we get a palindrome (8403342433048).

The spelling of 1303121220017 in words is "one trillion, three hundred three billion, one hundred twenty-one million, two hundred twenty thousand, seventeen".